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MCQ
Which statement best describes the spontaneity of a reaction at constant temperature and pressure?
Unit-8 Energetics
A Every exothermic reaction is spontaneous
B A reaction is spontaneous if it proceeds with a decrease in free energy
C Endothermic reactions are never spontaneous
D Spontaneity depends only on activation energy
Explanation

A reaction is spontaneous when the free energy of the system decreases, though energy release is a common sign.

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